20" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Grille actual front end outer dimensions

actual front end outer dimensions are approximately 34 5/8" width X 20 5/8" height

actual front end outer dimensions are approximately 20 5/8" width X 36 5/8" height

or commercial environments

Actual Filter Size – 31 3/4"w x 29 3/4" x 1"

Actual Filter Size – 17 3/4"w x 23 3/4" x 1"

20" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Grille actual front end outer dimensions+ Product Details Size 20"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 875" width X 10" height. High Quality High quality steel construction, no scuff powder coat durable finish, smooth, shiny, scratch resistant, no sharp edges, 2 recessed screw holes on each side with screws included, screws same color as vent cover, easy installation. Adjustable airflow control Adjustable airflow